PROSPECTUS SUPPLEMENT File No. 333-68747
(To Prospectus and Prospectus Supplement dated May 6, 1999) Rule 424(b)(3)
Prospectus number: 1965
Merrill Lynch & Co., Inc.
Medium Term Notes, Series B
Due Nine Months or More from Date of Issue
Fixed Rate Notes
Principal Amount: $175,000,000
CUSIP Number: 59018S6R4
Interest Rate: 7.52000%
Original Issue Date: May 9, 2000
Stated Maturity Date: May 3, 2002
Interest Payment Dates: Each May 3, and November 3rd, commencing on November
3, 2000, subject to Mofidied Following Business Day
Convention.
Repayment at the Option
of the Holder: The Notes cannot be repaid prior to the Stated
Maturity Date.
Redemption at the Option
of the Company: The Notes cannot be redeemed prior to the Stated
Maturity Date.
Form: The Notes are being issued in fully registered
book-entry form.
Trustee: The Chase Manhattan Bank
Dated: May 4, 2000
